Osullivan Family History

You can see how Osullivan families moved over time by selecting different census years. The Osullivan family name was found in the USA, the UK, Canada, and Scotland between 1840 and 1920. The most Osullivan families were found in USA in 1920. In 1891 there were 103 Osullivan families living in London. This was about 28% of all the recorded Osullivan's in United Kingdom. London had the highest population of Osullivan families in 1891.

Use census records and voter lists to see where families with the Osullivan surname lived. Within census records, you can often find information like name of household members, ages, birthplaces, residences, and occupations.